The reason cosmology seems open to just any goof saying any opinion about it is the history of armchair philosophers trying to make up for what they lacked: science. They sat about and tried, hamfistedly, to figure it out. Now, no one should blame ancient armchair philosophers and mystics for trying, or myth-makers for coming up with their stories, because they didn’t have anything else and meaning-making is essential to humans. So with science being the only source for non-stupid information about the cosmos, the only thing left for armchair philosophers nowadays is how to live a good life, politics, societal values. And, more interestingly to me, the thing left for our contemporary myth-makers (artists, novelists, movie-makers, "cultural creatives") is to help update our way of relating with what science knows about nature. Not fill in the gaps, but to bring the knowledge "home" for everybody. Like some do by promoting "the universe story" or "the epic of evolution".